7156688691242 has 16 divisors (see below), whose sum is σ = 10858630668480. Its totient is φ = 3537233075328.

The previous prime is 7156688691209. The next prime is 7156688691259. The reversal of 7156688691242 is 2421968866517.

It is a super-2 number, since 2×7156688691242² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21821828 + ... + 22147359.

It is an arithmetic number, because the mean of its divisors is an integer number (678664416780).

Almost surely, 2^{7156688691242} is an apocalyptic number.

7156688691242 is a deficient number, since it is larger than the sum of its proper divisors (3701941977238).

7156688691242 is a wasteful number, since it uses less digits than its factorization.

7156688691242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43970125.

The product of its digits is 69672960, while the sum is 65.

The spelling of 7156688691242 in words is "seven trillion, one hundred fifty-six billion, six hundred eighty-eight million, six hundred ninety-one thousand, two hundred forty-two".